Continuous tankage press



Feb. 25, 1930. i B WINGER y I. 1,748,374

` CONTINUOUS TANKAGE PRESS v Filed Aug. 25,v 192e V2 sheets-sheet 1 Bernard Megen' Feb. 25, 1930. B. wl-NGER CONTINUOUS TANKAGE PRESS Filed Aug. 25, 1926 2 Sheets-Sheet 2 l IIIIIIIIIIIIIIIIIIIIIIIIIII I I Wllhh 3mm/kw Bernard Mn'ger @www Y Patented Feb;v z5, 1930 PATENV'` OFFICE f BERNARD WINGERQ or OTTUMWA, IOWA CONTINUOUS TANKAGE IRnss Application mea August a5, 192e. serial No. 131,523.

This invention relates to a pressing apparatus' for `extracting moisture and greases from substances such as'tankage, sludge and lthe like, such substances being the residue after .greases nand lard have been rendered from animal products.

" 'An object of my invention is to provide` ak press which will squeeze the valuable greases from tankage and the like, leaving a loresidual substance practically dry and containing a minimum of such greases.

Another object is to provide a device of this kind which is continuously operating and which maybe built in various sizes. f Another object is to provide a pressure feed mechanismwhich may be employed singly orin numbers in battery form, with a single `extracting mechanism of my invention.

' These'andfother Objects are attained `by ythe means described herein andy disclosed in the :accompanying drawings7 in whichFig. 1 vis a plan view of one embodiment Lof the device ofmy invention. l l

yFig. 2 is a cross `sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a view taken on line 3 3 of 1. e The device comprises a suitable base 5, having Iuprights 6 Lprovided with recesses within which are disposedsuitable bearings 30 for rotatably supporting heavy metallic'rolls Sand 9, the circumferences vof which are preferably provided with corrugations comprising longitudinal ridges 10 and grooves 11. Thecorrugated faces of the rolls are adapted 35, to normally intermesh as the rolls are rotated.

The rolls 8 and 9 are preferably 'hollow and ymaybe provided with suitable connections to steam pipes 12 and 13,- forthe purpose oit heating said krolls by steam.` Pressure is exerted upon roll 8 by means of suitable hydraulic cylinders 14, Which are lled with -oil or Aany other suitable liquid 15 which exerts pressure upon top bearing plate 16,

vvhic'hlhas` a suitablypackedA piston 17 eX- tending into cylinder 14. A suitable steam cylinder 170 supplied through steam pipe 18 yfromany suitablesource acts upon piston head' 19,.c'arryin`g a piston 20 which extends into hydraulic cylinder 14 see Fig. 3). One of thefsteamfactuated hydraulic cylinders is provided at each end of roll 8 and the pres-v sure therefrom is exerted upon the bearings of said roll so that the surfaces of the rolls yare pressed tightly against one another and at the same time provides for movement of the rolls away from one another. yThe pipes 18 may be fed from a common source, so that uniform pressure is exerted at both ends of the roll 8. Rods 21 serve to mount the steam cylinders above the press and also serve as vertical guides upon which the bearing plates 16 are free to slide.

Referring to Fig. 3, it will be noted that the hydraulic cylinder 14 has the piston 2O v extending for a distance into its interior and G0 that the piston 17, carried by bearing plate 16, has a vertical bore 200 therein, into which the end of the rod or piston 2O may move. The oil or other liquid 15 is contained not Y only in the hydraulic cylinder 14 but inthe 70 bore 200 in the pistonl?. From the foregoing, it will be apparent that when suiicient pressure is exerted in steam cylinder 170, the hydraulic chamber 14 will move relatively to piston 17 and the end of rod or pis- 5 ton 20 entering bore 200 will exert a greatly vaugmented pressure on bearing plate 16.

This structure not only provides the necessary pressure but also permits ysufficient resiliency for the roll 8, to permit any possible irregular masses of the tankage to be forced between the rolls.l Roll 8 may be rotated by any suitable means such as a drive chain 22 passing to a suitable sprocket 2,3, mounted ixedly to the roll 8, the said chain being driven from a suitable drive sprocket such as 24. As shown in Fig. 1, an idler sprocket 25, freely rotatable upon arm 26 of a bell crank lever pivotally mounted as at 27 and having a counter-weight 28, serves to retain the chain 22 in proper driving engagement with sprocket 23 and at the same time permits movement ofthe roll8 toward and away from roll 9. A perforated platen 29, which may be provided by suitably slotting a rectangular plate, is mounted snugly against the faces of the rolls so that the tankage or other material'to be pressed will not find its way between the contactingsurfaces. The perforations or slots 30 in platen 29 provide for the escape of greases and other fluids which are pressed from the tanlrage or sludge. The platen 29 is provided with circular opening 3l for receiving a suitably perforated or lslotted end 32 of a pressure cylinder 33 having a suitable filling spout or hopper 34 extending therefrom. A ram 35 is mounted for reciprocation in the hollow interior of cylinder 33 and may be actuated by a suitablepiston rod 36 operated by a suitable steam cylinder 37. Any suitable control for the steam cylinder37 may be employed, the particular means used forming no part of this invention. As will be noted in Fig. l, the embodiment herein disclosed is provided with two of the cylinders 33, rams'35 operating therein and steam cylinders 3 foractuating said rams; The steam cylinders may receive their steam from a common source through steam pipes38. The operation of the device is as follows: The rolls 8 and 9 are brought into pressing relation with one another by supplying yhydraulic pressure to bearing plates 16, which pressure is had through the agency of steam cylinders l?. The sprocket 24- is then actuated through any suitable power agency such as a motor, and in turn rotates the sprocket 23, which actuates corrugated roll 8, meshing with corru-v gated roll 9. Steam is then admitted'to cylinders 37 through supply pipes o8 for rcciprocating rams 35. Sludge or tankage to be pressed is then thrown into hopper or spout 34 when the ram 35 is in retracted position. As ram 35 moves forwardly incylinder 33, it forces the tankage orv sludge through the cylinder and intov the space 39 bounded by portions of the peripherics of the rolls 8 and 9, and the platen 29, `where they corrugations in the rotating` rolls exercise great pressure upon the tanliage and at the same time subject it toA heat. Suitable end plates 300 fit snugly against the ends of the rolls and preclude escape'of the tanlzage from the chamber 39. lt will be readily apparent thatV the greases and other fluid matter will K find its way through the perforations or slots 30, both in the platenand in the end 32 of cylinder 33. vThe solid matter, from which has been expressed'the fluids orl greases, is forced between the rolls by a new charge or quantityfof sludge, which is fed into spout or hopper 34 prior to each forward movement of ram 35. The rolls will yield slightly against the hydraulic pressure in cylinder 11i?,

-to permit the solid matter to pass between them, and the force thus exerted serves'to extract substantially all of the moisture and fluid matter therefrom. Scrapers l0 and all operate on the sides of rolls 8 and 9 respectively and keep the surfaces thereof clear ofV adhering pressed material. T he pressed and substantially dry matter may bev permitted to flow into any suitable container ortrucli, While thefliquids and greases may be collected in any suitable tank orcontainer disposed beneath the perforated cylinders and platens.

It will be readily understood that the rolls 8 and 9 may be made of any desired length and that the number of rams may be regulated by the desired capacity of the press.k

alternate movement in order to permit a workman to shovel quantities of sludge intov one of said cylinders while the ram in the other cylinder is pressing itsquantity of material between the rolls. i

What I claim is: yIl. A controllable lpressure device having pressing rolls comprising a bearing plateA adapted for use with a roll bearing, a hollow pistonv extending from said bearing plate, a hydraulic cylinder for receiving said piston andfadapted to Vcontain a non-compressible liquid, a stem chamber, a piston in said chamber,y a piston rod fixed at nits one endto saidpiston and extending'into the hydraulic cylinder and means for admitting thesteam Y.

to thechamber wherebythe piston is moved forward, urging the piston rod and hydraulic chamber towardthe hollow piston for exerting pressure on the-roll.

2 In a steam actuated hydraulic pressure i device, the combination of a steam chamber having a piston and piston rod slidably mounted therein, a hollow pressurepiston, a hydraulic cylinder yslidable in said cylinder and having the piston rod extending through the cylinder and adapted for entry into the hollow in said piston, ameans vfor admitting uncompressible liquid in the hydraulic chamber and the hollowA interior of the piston, a'

chamber whereby thev steam pistonis moved forward, urging the hydraulic cylinder over `means for admittingV steam to the steam i the piston and tending to enter the end of the piston rod into the hollow interior of said piston.

i' 3. In combination, a corrugated roll hav-` ing a ixed axis, a second normally intermeshing corrugated roll mounted for bodilyfmovement toward and away fromthe first mentioned roll, a bearing plate at each end of the movable roll, a piston on each bearing-plate, a cylinder reciprocable over each of said pistons and adapted to containliquid andV steam actuated piston rods for moving the cylinders for exerting pressure on the rolls.V

4. A controllable pressure device having pressing rollsand comprising a bearing plate adapted for use with a roll bearing, a hollow piston extending from said'bearing plate, a cylinder for receiving the piston and adapted to contain a non-compressible liquid, a chamloer,` a piston in said chamber, a piston rod ViXeol at its one end to said piston and extend'- ing into the hydraulic chamber and means lwhereby the ypiston is moved for urging the piston rod and hydraulic chamber toward Vthe hollow piston for exerting pressure on the roll. n f In testimony whereof, I have hereunto subscribed' my name this 20th day of August, 1926.

BERNARD WINGER. 

